Your electrical supply wires should include a black (or hot) wire, a white (or neutral) wire and either a green or a bare wire, which is the ground wire. First remove the electrical cover plate on the bottom of the new disposer. Then move the new disposer into the cabinet. Screw the threaded end of the cable connector into the round hole on the bottom of the disposer. You’ll run your electrical supply wires through the cable connector and up through the access hole.

I think those are all the important items I wanted to share. The removal of the old one, cleaning the sink hole, and putting in the new box took about 35 minutes start to finish. I wasn't rushing but I was well prepared and had everything ready to go. Plumbers Putty was needed for install. Make sure you have that on hand. There was a thin rubber gasket that went under the flange (between the top flange and a stainless steel sink) that I didn't use because I didn't have a stainless steel sink. The one tricky thing I recall from the directions is that the same procedure is repeated twice in a couple of places - one for using the existing Badger mounting hardware and one for if you are using the EZ Mount system. If you are using the EZ Mount, make sure to SKIP the paragraph that is describing the work as it applies to the Badger mount. That's about it. I had to cut 3/4" off the black waste discharge pipe (90 degree elbow piece that screws into the new disposal) so that everything fit with my old plumbing. I loosened up all the slip joints on the old plumbing so I could wiggle things around as needed, aligned everything, and tightened the plumbing back up. New install was completed in well under 20 minutes after the removal and outlet installation.

One of the screws on the side of my Badger 5 is rusty and seems to be the source of a very minor leak. If I leave a towel in place under the side of the unit, it will saturate after a week or two. Drain, dishwasher, and sink connections are bone dry. As well as the flange connect at sink. Can I let it be or is this a major disaster waiting to happen?
To be prepared, measure the distance from the outlet to the top of each disposal before you remove the old unit. If the new unit’s outlet is lower, you must also lower the tee that the discharge pipe connects to. Loosen the two nuts that connect the tee to the tailpiece above and the trap below. Try lowering the tee to see if the tailpiece is long enough. If it’s not, you’ll have to replace it with one that’s slightly longer.
If the disposal’s still leaking, loosen the mounting bolts and push the sink flange up until it’s slightly higher than the surface of the sink. Apply fresh plumber’s putty to the threshold between the flange and the sink. When you’ve applied enough, re-attach the unit by putting the bolts back and tightening. Wipe away excess putty that squeezed out. Finish re-installing by replacing the disposal unit on the mount. Turn the disposal back on and look for leaks.
As the #1 faucet brand in North America, Moen offers a diverse selection of thoughtfully designed kitchen and bath faucets, showerheads, accessories, bath safety products, garbage disposals and kitchen sinks for residential and commercial applications each delivering the best possible combination of meaningful innovation, useful features, and lasting value.
Proper use of a garbage disposal can stave off future leaks. So remember to grind only soft foods; hard items such as bones, apple cores, or raw potatoes can dislodge or damage the internal seals. Run cold water through the sink drain before and after food disposal to keep solid fats from congealing into gunk (which can deteriorate the sink flange and cause leaks). Finally, inspect your disposal for leaks—at least twice a year using the dyed-water test—to catch and repair minor leaks before they lead to water-damaged sink cabinets or kitchen floors.

Some folks knocked the instructions. Take heart. It appears that the Waste King guys have heard the criticisms from the negative reviewers. I am guessing that they have been re-written to better explain the installation because they are really easy to follow. My best advice is this: don't be afraid of a difficult or confounding set of installation instructions. It is really easy. Here's what you do. Go to youtube.com and search for a video on How To Remove Your Existing Garbage Disposal because this is the hardest part. You will find one that matches yours. Watch it. I started removing the Badger incorrectly, stopped, watched a video, and then it was a piece of cake. In my case, I shouldn't have removed the three long screws before removing the body of the old one. You do it after it is disconnected. READ the instruction manual carefully. Then go ahead and youtube the Waste King installation video. It is very easy once you see it done. No filing or grinding gaskets, and Good Lord, no car jacks under your sink please. If it is hard then you are doing something wrong. STOP!!! Review the procedure. Start again. The directions are actually very explicit. The parts are well labeled. The diagrams show you what to do. The videos show you what to do. If you prepare yourself (15 minutes of reading and watching videos, tops) you will fly though the installation and be a happy person.